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ManualSERVICECOLOR MONITOR CONTENTS
1. Precautions
2. Product Specifications
3. Disassembly & Reassembly
4. Alignment & Adjustments
5. Troubleshooting
6. Exploded View & Parts List
7. Electrical Parts List
8. Block Diagram
9. Wiring Diagram
10. Schematic Diagrams
COLOR MONITORPG17N*/PG19N*
Samsung Electronics Co., Ltd. April 2000.Printed in KoreaP/N : BH68-00129F-01
WARNINGS1. For continued safety, do not attempt to modify the
circuit board.
2. Disconnect the AC power before servicing.
3. When the chassis is operating, semiconductorheatsinks are potential shock hazards.
1-1-1 Servicing the High Voltage VR and CRT :
WARNING:A high voltage VR replaced in the wrong
direction may cause excessive X-ray
emissions.
Caution: When replacing the high voltageadjustment VR, it must be fixed by asoldering iron after it is properly set.
1. When servicing the high voltage system, removethe static charge by connecting a 10 kohm resistorin series with an insulated wire (such as a testprobe) between the chassis and the anode lead.
2. If the HV VR requires adjustment, (a) Replace theVR and adjust the high voltage to the specification.(b) Use a soldering iron to melt the adjustment capon the HV VR to prevent any movement.
3. When troubleshooting a monitor with excessivelyHV, avoid being unnecessarily close to the monitor.Do not operate the monitor for longer than isnecessary to locate the cause of excessive voltage.
4. High voltage should always be kept at the ratedvalue, no higher. Only when high voltage isexcessive are X-rays capable of penetrating the shellof the CRT, including the lead in glass material.Operation at high voltages may also cause failure ofthe CRT or high voltage circuitry.
5. When the HV regulator is operating properly, thereis no possibility of an X-ray problem. Make sure theHV does not exceed its specified value and that it isregulating correctly.
6. The CRT is especially designed to prohibit X-ray emissions. To ensure continued X-rayprotection, replace the CRT only with one that isthe same or equivalent type as the original.
7. Handle the CRT only when wearing shatterproofgoggles and after completely discharging the highvoltage anode.
8. Do not lift the CRT by the neck.
1-1-2 Fire and Shock Hazard :Before returning the monitor to the user, perform thefollowing safety checks:
1. Inspect each lead dress to make certain that theleads are not pinched or that hardware is notlodged between the chassis and other metal parts inthe monitor.
2. Inspect all protective devices such as nonmetalliccontrol knobs, insulating materials, cabinet backs,adjustment and compartment covers or shields,isolation resistor-capacitor networks, mechanicalinsulators, etc.
3. Leakage Current Hot Check (Figure 1-1): WARNING: Do not use an isolation transformer during
this test.Use a leakage current tester or a metering systemthat complies with American National StandardsInstitute (ANSI C101.1, Leakage Current forAppliances), and Underwriters Laboratories (ULPublication UL1410, 59.7).
4. With the unit completely reassembled, plug the ACline cord directly into a 120V AC outlet. With theunit’s AC switch first in the ON position and thenOFF, measure the current between a known earthground (metal water pipe, conduit, etc.) and allexposed metal parts, including: metal cabinets,screwheads and control shafts. The currentmeasured should not exceed 0.5 milliamp. Reversethe power-plug prongs in the AC outlet and repeatthe test.
Figure 1-1. Leakage Current Test Circuit
1-1-4 Product Safety NoticesSome electrical and mechanical parts have specialsafety-related characteristics which are often notevident from visual inspection. The protection they givemay not be obtained by replacing them withcomponents rated for higher voltage, wattage, etc. Partsthat have special safety characteristics are identified by
on schematics and parts lists. A substitutereplacement that does not have the same safetycharacteristics as the recommended replacement partmight create shock, fire and / or other hazards. Productsafety is under review continuously and newinstructions are issued whenever appropriate.
Components identified by on schematics and partslists must be sealed by a soldering iron afterreplacement and adjustment.
PG17N*/PG19N* 1-1
1 Precautions
1-1 Safety Precautions
!
DEVICEUNDERTEST
TEST ALLEXPOSED METAL
SURFACES
(READING SHOULDNOT BE ABOVE 0.5mA)
LEAKAGECURRENTTESTER
2-WIRE CORD
ALSO TEST WITHPLUG REVERSED
(USING AC ADAPTERPLUG AS REQUIRED) EARTH
GROUND
1. Servicing precautions are printed on the cabinet,and should be followed closely.
2. Always unplug the unit’s AC power cord from theAC power source before attempting to: (a) removeor reinstall any component or assembly, (b)disconnect PCB plugs or connectors, (c) connect alltest components in parallel with an electrolyticcapacitor.
3. Some components are raised above the printedcircuit board for safety. An insulation tube or tapeis sometimes used. The internal wiring issometimes clamped to prevent contact withthermally hot components. Reinstall all suchelements to their original position.
4. After servicing, always check that the screws,components and wiring have been correctlyreinstalled. Make sure that the area around theserviced part has not been damaged.
1. Immediately before handling any semiconductorcomponents or assemblies, drain the electrostaticcharge from your body by touching a known earthground. Alternatively, wear a discharging wrist-strap device. To avoid a shock hazard, be sure toremove the wrist strap before applying power tothe monitor.
2. After removing an ESD-equipped assembly, place iton a conductive surface such as aluminum foil toprevent accumulation of an electrostatic charge.
3. Do not use freon-propelled chemicals. These cangenerate electrical charges sufficient to damageESDs.
4. Use only a grounded-tip soldering iron to solder ordesolder ESDs.
5. Use only an anti-static solder removal device. Somesolder removal devices not classified as “anti-static”can generate electrical charges sufficient to damageESDs.
5. Check the insulation between the blades of the ACplug and accessible conductive parts (examples:metal panels, input terminals and earphone jacks).
6. Insulation Checking Procedure: Disconnect thepower cord from the AC source and turn the powerswitch ON. Connect an insulation resistance meter(500 V) to the blades of the AC plug.
The insulation resistance between each blade of theAC plug and accessible conductive parts (seeabove) should be greater than 1 megohm.
7. Never defeat any of the +B voltage interlocks. Donot apply AC power to the unit (or any of itsassemblies) unless all solid-state heat sinks arecorrectly installed.
8. Always connect a test instrument’s ground lead tothe instrument chassis ground before connecting thepositive lead; always remove the instrument’sground lead last.
6. Do not remove a replacement ESD from itsprotective package until you are ready to install it.Most replacement ESDs are packaged with leadsthat are electrically shorted together by conductivefoam, aluminum foil or other conductive materials.
7. Immediately before removing the protectivematerial from the leads of a replacement ESD,touch the protective material to the chassis orcircuit assembly into which the device will beinstalled.
Caution: Be sure no power is applied to the chassis or circuit and observe all other safety precautions.
8. Minimize body motions when handlingunpackaged replacement ESDs. Motions such asbrushing clothes together, or lifting your foot froma carpeted floor can generate enough staticelectricity to damage an ESD.
9. Indicates ESDs on the Schematic Diagram inthis manual.
Some semiconductor (solid state) devices can be easily damaged by static electricity. Such components are commonlycalled Electrostatically Sensitive Devices (ESD). Examples of typical ESD devices are integrated circuits and some field-effect transistors. The following techniques will reduce the incidence of component damage caused by static electricity.
1-2 Servicing Precautions
WARNING1: First read the “Safety Precautions” section of this manual. If unforeseen circumstances
create conflict between the servicing precautions and safety precautions, always
follow the safety precautions.
WARNING2: A high voltage VR replaced in the wrong direction may cause excessive X-ray
emissions.
WARNING3: An electrolytic capacitor installed with the wrong polarity might explode.
2 Product Specifications
2-1 Specifications
Picture Tube: 17-Inch (43 cm): 16-inch (40.6 cm) viewable, 19-Inch (48.2 cm): 18-inch (45.8 cm) viewable,17”/19”: 0.25 mm Dot pitch, Full-square flat-face tube, 90˚ Deflection,Anti-Reflection coating with Anti-electrastatic, Medium short persistence phosphor
Scanning Frequency Horizontal : PG17N*: 30 kHz to 96 kHz (Automatic), PG19N*: 30 kHz to 110 kHz (Automatic)(Automatic) Vertical : 50 Hz to 160 Hz (Automatic)
Display Colors Unlimited colors
Maximum Resolution Horizontal : 1600 DotsVertical : 1200 Lines
Input Video Signal Analog, 0.7 Vp-p positive at 75 Ω, internally terminated
Input Sync Signal Separate Sync : TTL level positive/negativeComposite Sync : TTL level positive/negativeSync-on-Green : Composite sync 0.3 Vp-p negative (Video on Vp-p positive)
Active Display 17” ; Horizontal : 312 mm ± 3 mm (12.28” ± 0.12”)Vertical : 234 mm ± 3 mm (9.21” ± 0.12”)
19” ; Horizontal : 352 mm ± 3 mm (13.86” ± 0.12”) Vertical : 264 mm ± 3 mm (10.39” ± 0.12”)
Input Voltage AC 90 to 264 Volts, 60/ 50 Hz ± 3 Hz
Power Consumption (max) 17”: 130 Watt , 19”: 150 Watt
Dimensions Unit ; 17” : 16.3 x 17.2 x 17.6 Inches (415.0 x 438 x 448 mm)(W x D x H) 19” : 18.4 x 18.0 x 19.4 Inches (468 x 458 x 493 mm)
Carton ; 17” : 22.2 x 22.9 x 21.6 Inches (564 x 581 x 548 mm)19” : 22.5 x 24.4 x 22.6 Inches (571 x 620 x 574 mm)
Weight (Net/Gross) 17” : 43.4 lbs (19.7 kg) / 50.7 lbs (23.0 kg)(Net/Gross) 19” : 55.8 lbs (25.3 kg) / 64.6 lbs (29.3 kg)
Environmental Considerations Operating Temperature : 32°F to 104°F (0°C to 40°C)Humidity : 10 % to 80 %Storage Temperature : -4°F to 113°F (-20°C to 45°C)Humidity : 5 % to 95 %
• PG17N*/PG19N* complies with TCO 99 recommendations for reduced electromagnetic fields.• Designs and specifications are subject to change without prior notice.
PG17N*/PG19N* 2-1
Item Description
2 Product Specifications
2-2 PG17N*/PG19N*
Q R S
P
O
Video
Sync Sync
Horizontal Vertical
C D E
P
O
B
A
Video
Sync Sync
Separate Sync
A : Line time total B : Horizontal sync width O : Frame time total P : Vertical sync width
C : Back porch D : Active time Q : Back porch R : Active time
E : Front porch S : Front porch
B
GreenVertical
P Q R SO
Horizontal
Sync-on-Green
1024/75 Hz1024 x 768
1600/85 Hz1600 x 1200
800/85 Hz800 x 600
VGA3/60Hz640 x 480
VGA2/70Hz720 x 400
Table 2-1. Timing Chart
fH (kHz)
A µsec
B µsec
C µsec
D µsec
E µsec
fV (Hz)
O msec
P msec
Q msec
R msec
S msec
ClockFreq.(MHz)
PolarityH.Sync
V.Sync
Remark
31.469
31.778
3.813
1.907
25.422
0.636
70.087
14.268
0.064
1.080
12.711
0.413
28.322
Negative
Positive
Separate
31.469
31.778
3.813
1.907
25.422
0.636
59.940
16.683
0.064
1.048
15.253
0.318
25.175
Negative
Negative
Separate
53.674
18.631
1.138
2.702
14.222
0.569
85.061
11.756
0.056
0.503
11.179
0.019
56.250
Positive
Positive
Separate
60.023
16.660
1.219
2.235
13.003
0.023
75.029
13.328
0.050
0.466
12.795
0.017
78.750
Positive
Positive
Separate
106.250
9.412
0.837
1.325
6.972
0.279
85.000
11.765
0.028
0.433
11.294
0.009
229.50
Positive
Positive
Separate
Mode IBM VESA MAC.
Timing
68.677
14.561
1.016
2.201
10.836
0.508
84.997
11.765
0.044
0.524
11.183
0.015
94.500
Positive
Positive
Separate
68.681
14.560
1.280
1.440
11.520
0.320
75.062
13.322
0.044
0.568
12.667
0.044
100.000
Negative
Negative
SOG
49.726
20.110
1.117
3.910
14.524
0.559
74.551
13.414
0.060
0.784
12.549
0.020
57.284
Negative
Negative
SOG
91.146
10.971
1.016
1.422
8.127
0.406
85.024
11.761
0.033
0.483
11.235
0.011
157.500
Positive
Positive
Separate
79.976
12.504
1.067
1.837
9.481
0.119
75.025
13.329
0.038
0.475
12.804
0.013
135.000
Positive
Positive
Separate
1024/85 Hz1024 x 768
1152/75 Hz1152 x 870
832/75 Hz832 x 624
1280/75 Hz1280 x 1024
1280/85 Hz1280 x 1024
3-1-1 Before making Disassembly
1. Disconnector signal cable and power cordfrom the monitor.
2. With a pad beneath it, stand the monitor on itsfront with the screen facing downward andthe base close to you.
3. Make sure nothing will damage the screen.
3-1-2 Cabinet Disassembly
1. With a pad beneath it, stand the monitor on itsfront with the screen facing downward andthe base closest to you. Make sure nothing willdamage the screen.
2. Remove the Stand from the monitor.(Refer to Stand manual)
3. Incline the monitor by lifting the rear of themonitor.
4. Push the Opening jig each groove along thetop of the monitor till it makes a “ttak” sound.(2 grooves : Left and Right, Make sure eachsnap is disengaged.)
5. Squeeze the hold-snap on bottom of themonitor using your hand.
6. Insert the Opening jig into the groove thenrelease the hold-snap.
PG17N*/PG19N* 3-1
3 Disassembly and ReassemblyThis section of the service manual describes the disassembly and reassembly procedures for thePG17N*/PG19N* monitors.
WARNING: This monitor contains electrostatically sensitive devices. Use caution when handling
these components.
3-1 Disassembly
Cautions:1. Disconnect the monitor from the power source before disassembly.2. Follow these directions carefully; never use metal instruments to pry apart the cabinet.
Figure 3
Figure 4
Figure 2
Figure 1
7. When the hold-snap release, lift the RearCover slightly to make sure it doesn’t re-engage while you release the snap on theother side.
8. In a similar manner, Release the hold-snap onthe opposite side.
9. Pull the Rear Cover up off the monitor.
3-1-3 Removing the Stand
Pull the tab outward on the chassis bottomand pull the tilt and swivel base up to removeit.
3-1-4 Removing the Top Shield
Remove the 6 screws on the top shield coverand remove the shield.
3-1-5 Removing the Video PCB Assembly and the Video PCB
1. Disconnect CN102, CN101, CN12, CN-EMCand CNRed, white wires of SK105 on theVideo PCB Assembly.
2. Remove the 2 wires video PCB Assembly rearshield and Video Assembly from the CRTneck.
3. Remove the 3 screws on the PCB Assembly.4. Remove the Video PCB Assembly rear shield.
(5 point)5. Lift out the Video PCB and pleat it on a flat,
level surface that is protected from staticelectricity.
3-1-6 Removing the Purity PCB Assemblyand Purity PCB
1. Remove the 1 screw on the PCB Assembly.2. Disconnect CN801, CN803, CN804, CN805 on
the Purity PCB Assembly and Purity PCBAssembly from the Main PCB Assembly.
3. Remove the 2 screws on the PCB Assembly.
3-1-7 Removing the Main PCB Assemblyand the Main PCB
1. Remove chassis ground wire on the lift side..2. Disconnect CN201, CN409, CN601, H_DY,
CN601 and anode cap on the Main PCBAssembly.
3. Squeeze the hold-snap on bottom of themonitor using your hand.
4. Remove right side shaft-power Main PCB.5. Remove 6 screws on the main PCB.6. Pull the Main PCB towards you and carefully
lift out the main PCB and placet it on a flat,level surface that is protected from staticelectricity.
3-1-8 Removing the Bracket
Remove the 4 screws on the Front Cabinet.
3 Disassembly and Reassembly
3-2 PG17N*/PG19N*
3-2 Reassembly
Reassembly procedures are in the reverse order of Disassembly procedures.
Figure 6
Figure 5
3-1-9 Removing the Degaussing Coil
1. Using pinch-nosed pliers or long-nosed pliers,carefully push the 4 plastic ties on the Bracket.
2. Lift the Degaussing Coil Assembly from theBracket.
3 Disassembly and Reassembly
PG17N*/PG19N* 3-3
4-2 Reassembly
Reassembly procedures are in the reverse order of Disassembly procedures.
4-1-1 Before Making Adjustments
4-1-1 (a) ORIENTATIONWhen servicing, always face the monitor to theeast.
4-1-1 (b) MAGNETIC FIELDSWhenever possible, use magnetic field isolationequipment such as a Helmholtz field to surroundthe monitor. If a Helmholtz field is not available,frequently degauss the unit under test.
Caution: Other electrical equipment may causeexternal magnetic fields which mayinterfere with monitor performance.
Use an external degaussing coil to limit magneticbuild up on the monitor. If an external degaussingcoil is not available, use the internal degaussingcircuit. However, do not use the internaldegaussing circuit more than once per 30 minutes.
4-1-1 (c) WARM-UP TIMEThe monitor must be on for 30 minutes beforestarting alignment. Warm-up time is especiallycritical in color temperature and white balanceadjustments.
4-1-1 (e) SCANNING FREQUENCYHorizontal: 30 kHz to 110 kHz (Automatic)Vertical: 50 Hz to 160 Hz (Automatic)Unless otherwise specified, adjust at the 1024 x 768 mode (H: 68 kHz, V: 85 Hz) signals. Refer to Table 2-1 on pages 2-2 and 2-3.
4-1-1 (f) HIGH VOLTAGE ADJUSTMENTSignal: 1024 x 768 mode (68 kHz/85 Hz)Display image: Full whiteContrast: Maximum Brightness: MaximumLimit: 27.0 kV ± 0.5 kV
(17”: 25 kV ± 0.5 kV)Measure the hight voltage level at the anode cap.High voltage should be within the limit as above.If the high voltage needs adjustment use theSoftjig.
4-1-1 (g) G2 (SCREEN) VOLTAGE ADJUSTMENTSignal: 1024 x 768 mode (68 kHz/85 Hz)Display image: Full whiteContrast: Maximum Brightness: MaximumAdjust the Screen VR of the FBT so that the G2(Screen) Voltage for Toshiba it is 620 V ± 10 V.
4-1-1 (h) CENTER RASTER
Adjust VR401 so that the back raster comes to thecenter when you apply a signal of 91 kHz/85 Hz.
PG17N*/PG19N* 4-1
4 Alignment and AdjustmentsThis section of the service manual explains how to make permanent adjustments to the monitor. Directionis given for adjustment using the monitor Interface Board Ver. 2.0 and software (Softjig).
4-1 Adjustment Conditions
Caution: Changes made without the Softjig are saved only to the user mode settings. As such, thesettings are not permanently stored and may be inadvertently deleted by the user.
PG17N*
PG19N*MITSUBISHI
G2 620V
4-1-1 (i) BRIGHTNESS AND CONTRASTUnless otherwise specified, adjust controlvolumes:Brightness: Maximum Contrast: Maximum
4-1-2 Required Equipment
The following equipment may be necessary foradjustment procedures:
4-1-2 (a) DISPLAY CONTROL ADJUSTMENT1. Non-metallic (–) screwdriver: 1.5 mm
Non-metallic (–) screwdriver: 3 mm2. Philips (+) screwdriver: 1.5 mm3. Non-metallic hexkey: 2.5 mm4. Digital Multimeter (DMM), or
Digital Voltmeter (DVM)5. Signal generator, or
Computer with a video board that uses theET-4000 chipset (strongly recommended ifusing Samsung DM 200 software) and thatdisplays: 1280 x 1024 @ 85 Hz, or 1600 x 1200@ 85 Hz (maximum).
6. Personal computer7. Required software: Softjig.exe from Samsung
which includes the SF9839TE.MDL (Toshiba CRT) data file Samsung DM200, or DisplayMate forWindows from Sonera Technologies
8. Interface Board Ver. 2.0 Code No. BH81-90001K
9. Parallel communications cable (25-pin to 25-pin); Code No. BH81-90001H
10. Signal cable (15-pin to 15-pin cable withadditional 3-pin connector); Code No. BH81-90001J
4-1-2 (b) COLOR ADJUSTMENTS1. All equipment listed in 4-1-2 (a), above2. Color analyzer, or any luminance
measurement equipmen
4-1-3 Connecting the SoftJig
Connect the monitor to the signal generator and/or PC as illustrated in Figures 4-1 and 4-2.
Note: The signal cable connector which includesthe 3-wire cable must connect to themonitor. If you use Setup 2 (PC only, nosignal generator) you can only makeadjustments to the signal timing availableon that computer system. To makecorrections to all factory timings requiresthe use of an additional signal generator.
4-1-4 After Making Adjustments
After finishing all adjustments, test the monitor inall directions. If, for example, the monitor does notmeet adjustment specifications when facing north,reposition the monitor to face east and readjust.This time, try for an adjustment closer to the idealsetting within the tolerance range. Test the unitagain in all directions. If the monitor again fails tomeet specifications in every direction, contactyour Regional After Service Center for possibleCRT replacement.
4 Alignment and Adjustments
4-2 PG17N*/PG19N*
MONITOR
INTERFACEBOARD VER. 2.0
PCSIGNALGENERATOR
3-WIRECABLE
SIGNAL CABLE
5V DCADAPTOR
PARALLEL CABLE
Figure 4-1. Setup 1, With Signal Generator
MONITOR
INTERFACEBOARD VER. 2.0
PC
3-WIRE CABLE
SIGNAL CABLEPARALLEL CABLE
D-SUBCONNECTOR
5V DCADAPTOR
Figure 4-2. Setup 2, Without Signal Generator
4-2-1 CenteringCentering means to position the center point ofthe display in the middle of the display area.Horizontal size and position and vertical size andposition control the centering of the display.
Adjust the horizontal size and vertical size to theiroptimal settings: 352 mm (H) x 264 mm (V).1280 x 1024 mode (91 kHz/85Hz)
Adjust the horizontal position and verticalposition to ≤ 4.0 mm of the center point of thescreen.
|A-B| ≤ 4.0 mm. |C-D| ≤ 4.0 mm.
Figure 4-3. Centering
4-2-1 (a) HORIZONTAL SIZE ADJUSTMENT
CONDITIONSScanning frequency: 91 kHz/85 HzDisplay image: Crosshatch patternBrightness: Cut-offContrast: MaximumClick on the << or >> box next to H_SIZE toadjust the horizontal size of the display pattern to352 mm. (Tolerance: ± 3 mm.)
4-2-1 (b) VERTICAL SIZE ADJUSTMENT
CONDITIONSScanning frequency: 91 kHz/85 HzDisplay image: Crosshatch patternBrightness: Cut-offContrast: MaximumClick on the << or >> box next to V_SIZE toadjust the vertical size of the display pattern to264 mm. (Tolerance: ± 3 mm.)
4-2-1 (c) HORIZONTAL POSITION ADJUSTMENT
CONDITIONSScanning frequency: 91 kHz/85 HzDisplay image: Crosshatch patternBrightness: Cut-offContrast: MaximumClick on the << or >> box next to H_POSI tocenter the horizontal image on the raster.
4-2-1 (d) VERTICAL POSITION ADJUSTMENT
CONDITIONSScanning frequency: 91 kHz/85 HzDisplay image: Crosshatch patternBrightness: Cut-offContrast: MaximumClick on the << or >> box next to V_POSI tocenter the vertical image on the raster.
4-2-2 LinearityLinearity affects the symmetry of images as theyappear on the screen. Unless each row or columnof blocks in a crosshatch pattern is of equal size,or within the tolerances shown in Tables 4-1 and4-2, an image appears distorted, elongated orsquashed.
Table 4-1. Factory Preset Modes Linearity
Table 4-2. Other Modes Linearity: VGA, SVGA, XGA, MAC, etc.
4-2-2 (a) HORIZONTAL LINEARITY ADJUSTMENT
CONDITIONSScanning frequency: 91 kHz/85 HzDisplay image: Crosshatch patternBrightness: Cut-offContrast: MaximumTo adjust the Horizontal Linearity, refer to Tables4-1 and 4-2 for the tolerance range.Click on the << or >> box next to H_LIN tooptimize the image.
4 Alignment and Adjustments
PG17N*/PG19N* 4-3
4-2 Display Control Adjustments
C
A
DISPLAY AREA
EDGE OF BEZELB
D
4 : 3
5 : 4
Horizontal: 20.5~23.5Vertical : 20.5~23.5
Horizontal: 19.18~22.07Vertical : 20.5~23.5
Supported Timing Mode
Each block (14 %) Difference betweenadjacent blocks (5 %)
Horizontal: Less than 1.10 mmVertical : Less than 1.10 mm
Horizontal: Less than 1.03 mmVertical : Less than 1.10 mm
4 : 3
5 : 4
Horizontal: 20.9~23.1Vertical : 20.9~23.1
Horizontal: 19.60~21.65Vertical : 20.9~23.1
Standard Modes Linearity
Each block (10 %) Difference betweenadjacent blocks (4 %)
Horizontal: Less than 0.88 mmVertical : Less than 0.88 mm
Horizontal: Less than 0.82 mmVertical : Less than 0.88 mm
4-2-2 (b) VERTICAL LINEARITY ADJUSTMENT
CONDITIONSScanning frequency: 91 kHz/85 HzDisplay image: Crosshatch patternBrightness: Cut-offContrast: MaximumTo adjust the Vertical Linearity, refer to Tables 4-1and 4-2 for the tolerance range.Click on the << or >> box next to V_LIN tooptimize the image.
4-2-3 Trapezoid Adjustment
CONDITIONSScanning frequency: 91 kHz/85 HzDisplay image: Crosshatch patternBrightness: Cut-offContrast: MaximumClick on the << or >> box next to TRAP to makethe image area rectangular.
Figure 4-4. Trapezoid
4-2-4 Pinbalance Adjustment
CONDITIONSScanning frequency: 91 kHz/85 HzDisplay image: Crosshatch patternBrightness: Cut-offContrast: Maximum
Click on the << or >> box next to PIN_BAL tooptimize the image.
4-2-5 Parallelogram Adjustment
CONDITIONSScanning Frequency: 91 kHz/85 HzDisplay image: Crosshatch patternBrightness: Cut-offContrast: MaximumClick on the << or >> box next to PARALL tomake the image are rectangular.
Figure 4-6. Parallelogram
4-2-6 Side Pincushion Adjustment
CONDITIONSScanning frequency: 91 kHz/85 HzDisplay image: Crosshatch patternBrightness: Cut-offContrast: MaximumClick on the << or >> box next to BARREL tostraighten the sides of the image area.
4-2-7 Tilt Adjustment
CONDITIONSScanning Frequency: 91 kHz/85 HzDisplay image: Crosshatch patternBrightness: Cut-offContrast: MaximumClick on the << or >> box next to ROTATE tocorrect the tilt of the display.
4-2-8 DegaussNo adjustments are available for the degaussingcircuit. The degaussing circuit can effectivelyfunction only once per 30 minutes.
4-2-9 To Delete the User Mode DataTo delete the adjustment data from the usermodes, Press the MENU Button for the10 Seconds .
4-2-10 Save the DataTo save the adjustment data for a mode, pressFACTORY SAVE.
4 Alignment and Adjustments
4-4 PG17N*/PG19N*
| C1 |, | C2 | ≤ 2.0 mm, | D1 |, | D2 | ≤ 2.0 mm.
Figure 4-7. Pincushion
A
5 mm
B
A
B
| D1 |, | D2 | ≤ 2.0 mm
Figure 4-5. Pinbalance
D1 D2 D1
C2
D2D1
C1
| A - B | < 5 mm
4-3-1 Color Coordinates (Temperature)Color temperature is a measurement of theradiant energy transmitted by a color. Forcomputer monitors, the color temperature refersto the radiant energy transmitted by white. Colorcoordinates are the X and Y coordinates on thechromaticity diagram of wavelengths for thevisible spectrum.
CONDITIONSMeasurement instrument: Color analyzerScanning frequency: 68 kHz/85 HzDisplay Size : 352 (H) x 264 (V)Display image: White flat field at
center of display areaBrightness: Cut-offContrast: Maximum
PROCEDUREUse the directions in sections 4-3-2 through 4-3-4to adjust the color coordinates for:9300K to x = 0.283 ± 0.02, y = 0.298 ± 0.026500K to x = 0.313 ± 0.02, y = 0.329 ± 0.025000K to x = 0.346 ± 0.02, y = 0.359 ± 0.02
4-3-2 Color Adjustments for 9300K
4-3-2 (a) BACK RASTER COLOR ADJUSTMENT
CONDITIONSScanning frequency: 68 kHz/85 HzDisplay image: Back raster patternBrightness: Cut-offContrast: Maximum
1. Select COLOR CHANNEL 1 to control thecolor for 9300K.
2. Adjust the luminance of the back raster tobetween 0.3 to 1ft-L using the G_CUTcontrols.
3. Click on the << or >> box next to B_CUT toset the “y” coordinate to 0.298 ± 0.02.
4. Click on the << or >> box next to R_CUT toset the “x” coordinate to 0.283 ± 0.02.
Note: If the above adjustments cannot be done to each coordinate, click on the << or >> box next to G_CUT to decrease or increase the green cutoff (bias) and repeat procedures 2 and 3.
4-3-2 (b) G-GAIN ADJUSTMENT
Figure 4-8. Green Box Pattern
CONDITIONSScanning frequency: 68 kHz/85 HzDisplay image: Green box patternBrightness: Cut-offContrast: Maximum
1. Click on the << or >> box next to G_GAIN toadjust the brightness of the Green Gain to 25 ± 1 ft-L.Note: If you can’t increase the Green Gain to
the appropriate value, click on the >> box next to increase the ABL point.
4-3-2 (c) WHITE BALANCE ADJUSTMENT
CONDITIONSScanning frequency: 68 kHz/85 HzDisplay image: Full white patternBrightness: Cut-offContrast: Maximum
Figure 4-9. Full White Pattern
1. Click on the << or >> boxes next to R_GAINand B_GAIN to make the video white.(For 9300K color adjustment:x = 0.283 ± 0.02, y = 0.298 ± 0.02.)
Note: Do not touch the G_GAIN controls.2. Check the ABL. If it is not within the
specifications (30 ± 1 ft-L), use the ABLcontrols to adjust it.
3. Select COLOR FACTORY SAVE to save thedata.
4 Alignment and Adjustments
PG17N*/PG19N* 4-5
4-3 Color Adjustments
1/3H-1/2H
1/3V-1/2V
FRONT BEZEL OPENING
BACK RASTER
GREEN WINDOW
FRONT BEZEL OPENING
BACK RASTER
WHITE WINDOW
4-3-2 (d) WHITE BALANCE ADJUSTMENT VERIFICATION
CONDITIONSScanning frequency: 68 kHz/85 HzDisplay image: Back raster patternX-Y Coordinates: x = 0.283 ± 0.02,
y = 0.298 ± 0.02Raster Luminance 0.3 ~ 1ft-LABL Luminance 30 ± 1 ft-LBrightness: Cut-offContrast: Maximum
1. Check whether the color coordinates of theback raster satisfy the above spec.If they do not, return to 4-3-2 (a) and readjustall settings.
2. Display a full white pattern.
Note: Do not touch the G_GAIN controls.
3. Adjust the Contrast Control on the monitor sothat the luminance of the video is about 5 ft-L.
4. Check whether the white coordinates of thevideo meet the above coordinates spec.
5. Adjust the Contrast Control again so that theluminance of the video is about 20 ft-L.
6. Check whether the white coordinates of thevideo satisfies the above spec.If they do not, return to 4-3-2 (a) and readjustall settings.
4-3-3 Color Adjustments for 6500K
4-3-3 (a) BACK RASTER COLOR ADJUSTMENT
CONDITIONSScanning frequency: 68 kHz/85 HzDisplay image: Back raster patternBrightness: Cut-offContrast: Maximum
1. Select COLOR CHANNEL 2 to control thecolor for 6500K.
2. Adjust the luminance of the back raster tobetween 0.3 to 1.0 ft-L using the G_CUTcontrols.
3. Click on the << or >> boxes next to R_CUTand B_CUT to adjust the R-Bias to x = 0.313 ±0.02 and the B-Bias to y = 0.329 ± 0.02.
4-3-3 (b) G-GAIN ADJUSTMENT
This procedure is the same as that for 9300K, referto the procedure on page 4-5.
4-3-3 (c) WHITE BALANCE ADJUSTMENT
CONDITIONSScanning frequency: 68 kHz/85 HzDisplay image: Full white patternBrightness: Cut-offContrast: Maximum
1. Click on the << or >> boxes next to R_GAINand B_GAIN to make the video white.(For 6500K color adjustment:x = 0.313 ± 0.02, y = 0.329 ± 0.02.)
2. Refer to the procedure for 9300K, section 4-3-2 (c) steps 2 and 3.
4-3-3 (d) WHITE BALANCE ADJUSTMENT VERIFICATION
Refer to the procedure for 9300K, section 4-3-2 (d).
4-3-4 Color Adjustments for 5000K
4-3-4 (a) BACK RASTER COLOR ADJUSTMENT
CONDITIONSScanning frequency: 68 kHz/85 HzDisplay image: Back raster patternBrightness: Cut-offContrast: Maximum
1. Select COLOR CHANNEL 3 to control thecolor for 5000K.
2. Adjust the luminance of the back raster tobetween 0.3 to 1.0 ft-L using the G_CUTcontrols.
3. Click on the << or >> boxes next to R_CUTand B_CUT to adjust the R-Bias to x = 0.346 ±0.02 and the B-Bias to y = 0.359 ± 0.02.
4-3-4 (b) G-GAIN ADJUSTMENT
This procedure is the same as that for 9300K, referto the procedure on page 4-5.Adjust the brightness of the G_GAIN less 5 ft-Lthan brightness of procedure for 9300K.
4-3-4 (c) WHITE BALANCE ADJUSTMENT
CONDITIONSScanning frequency: 68 kHz/85 HzDisplay image: Full white patternBrightness: Cut-offContrast: Maximum
1. Click on the << or >> boxes next to R_GAINand B_GAIN to make the video white.(For 5000K color adjustment:x = 0.346 ± 0.02, y = 0.359 ± 0.02.)
2. Refer to the procedure for 9300K, section 4-3-2 (c) steps 2 and 3.
4 Alignment and Adjustments
4-6 PG17N*/PG19N*
4-3-4 (d) WHITE BALANCE ADJUSTMENT VERIFICATION
Refer to the procedure for 9300K, section 4-3-2 (d).
4-3-5 Luminance Uniformity Check
Luminance is considered uniform only if the ratioof lowest to highest brightness areas on the screenis not less than 7.5:10.
CONDITIONSScanning frequency: 68 kHz/85 Hz
(1024 x 768)Display image: White flat fieldDisplay size 352 (H) x 264 (V)Brightness: Cut off point Contrast: Maximum
PROCEDUREMeasure luminance at nine points on the displayscreen (see figure below).
4-3-6 Focus Adjustment
CONDITIONSScanning frequency: 68 kHz/85 HzDisplay image: “H” character patternBrightness: Cut off pointContrast: Maximum
PROCEDURE1. Adjust the Focus VR on the FBT to display the
sharpest image possible.2. Use Locktite to seal the Focus VR in position.
4-3-7 Color Purity Adjustment
Color purity is the absence of undesired color.Conspicuous mislanding (unexpected color in auniform field) within the display area shall not bevisible at a distance of 50 cm from the CRTsurface.
CONDITIONSOrientation: Monitor facing eastScanning frequency: 68 kHz/85 HzDisplay image: White flat fieldLuminance: Cut off point at the center
of the display area
Note: Color purity adjustments should only beattempted by qualified personnel.
PROCEDUREFor trained and experienced service techniciansonly.
Use the following procedure to correct minorcolor purity problems:
1. Make sure the display is not affected byexternal magnetic fields.
2. Very carefully break the glue seal between the2-pole purity convergence magnets (PCM), theband and the spacer.
3. Make sure the spacing between the PCMassembly and the CRT stem is 29 mm ± 1 mm.
4. Display a green pattern over the entire displayarea.
5. Adjust the purity magnet rings on the PCMassembly to display a pure green pattern.(Optimum setting: x = 0.295 ± 0.015, y = 0.594 ± 0.015)
6. Repeat steps 4 and 5 using a red pattern andthen again, using a blue pattern.
Table 4-3. Color Purity Tolerances
(For 9300K color adjustment: x = 0.283 ± 0.02, y = 0.298 ± 0.02)
7. When you have the PCMs properly adjusted,carefully glue them together to prevent theirmovement during shipping.
4 Alignment and Adjustments
PG17N*/PG19N* 4-7
Red: x = 0.620 ± 0.015 y = 0.334 ± 0.015
Green: x = 0.289 ± 0.015 y = 0.595 ± 0.015
Blue: x = 0.153 ± 0.015 y = 0.072 ± 0.015
Figure 4-10 Luminance Uniformity Check Locations
Memo
4 Alignment and Adjustments
4-8 PG17N*/PG19N*
PG17N*/PG19N* 5-1
5 Troubleshooting
5-1 Parts Level Troubleshooting
Notes: 1. If a picture does not appear, fully rotate the brightness and contrast controls clockwise and reinspect.2. Check the following circuits.
• No raster appears: Power circuit, Horizontal output circuit, H/V control circuit, and H/V output circuit.• High voltage develops but no raster appears: Video output circuits.• High voltage does not develop: Horizontal output circuits.
5-1-1 No Power Supply
Check and replace FG601, D601,IC661, IC662.
Done.
Repeating start? Check and replace D601, D604, D663,Q632, and Q664.
No
Yes
IC601 Pin 1 waveform is right? Check and replace IC601, IC602, IC604.
Yes
No
IC602 and IC604are right? Replace parts and verify voltages.
Yes
No
Normal operation Replace Main board.
Yes
Yes
No
WAVEFORMS
1
Verify voltages.
1 368 V (IC601, #1)
CH1 P-P = 368 V CH1 RMS = 154.6 V
5 Troubleshooting
5-2 PG17N*/PG19N*
5-1-2 DPMS Failure
Check signal source H/V sync video level.
Make No H/V sync (power off mode)
LED blinks Check IC201 Pin 39.
Yes
No
+12 V line off Check IC201 Pin 9.
Yes
No
Q632 Base driving voltage exists? Check IC201 Pin 10.Check and replace Q632.
Yes
No
Done
5 Troubleshooting
PG17N*/PG19N* 5-3
5-1-3 H_Deflection Failure
Q406 Drain waveform is right? Check R480, D401, +210 V line.
Yes
No
Q404 gate, drain waveforms are right?
Check Q404, R415.Check +25 V line.
Yes
No
Q405 collector waveforms are right?
Check and replace D410 and Q405.Check DY connector connection.
Yes
No
Check some parts around Q261 and Q262.
IC261 Pin 8 waveform is right? Check some parts around IC261.
Yes
No
WAVEFORMS
14
10
16
10
10 13.0 V (Q404, Gate)
CH1 P-P = 13.0 V CH1 RMS = 7.91 V
15 66.4 V (Q404, Drain)
CH1 P-P = 66.4 V CH1 RMS = 25.84 V
16 1.24 kV (Q405, Collector)
CH1 P-P = 1.24 kV CH1 RMS = 302 V
15
14 1.24 kV (Q406, Drain)
CH1 P-P = 1.24 kV CH1 RMS = 302 V
10 13.0 V (IC261, #8)
CH1 P-P = 13.0 V CH1 RMS = 7.91 V
5 Troubleshooting
5-4 PG17N*/PG19N*
5-1-4 S Correction Failure
S1~S5 signals are right at eachfrequency block?
Check S1 ~ S5 signal.
Check and replace C451~ C457, Q451~Q455, Q456~Q460 .
Yes
5-1-5 H_Lin. Failure
IC201 Pin 22 voltage varies withdifferent H_Lin. DAC values?
IC403 Pin 7, 8 voltage varies withdifferent H_Lin. DAC values?
Check +12 V line.Check some parts around IC403.
Check L403.
Yes
Yes
No
Check and replace IC201.No
Replace IC201.No
5-1-6 Invariable H_Size
IC261 Pin 6 voltage varies withdifferent H_Size DAC values? Check and replace IC261.
No11
11 13.6 V (IC261, #6)
CH1 P-P = 13.6 V CH1 RMS =9.02 V
5 Troubleshooting
PG17N*/PG19N* 5-5
5-1-7 Abnormal H_Size
T402 Pin 8 waveform is right? Check and replace T402.
Check some parts around IC261 Pin 6and IC201 Pin 20.
Yes
No
5-1-8 Side Pin or Trap Failure
IC261 Pin 11 output exists? Check and replace IC261.